Vlll 



March 30, 1876. 



Page 



An Experiment on Electro-Magnetic Rotation. By W. Spottiswoode, M.A., 

 Treas. and V.P.R.S 403 



The Residual Charge of the Leyden Jar. By J. Hopkinson, M.A., D.Sc. . 407 



On the Placentation of the Lemurs. By Wm. Turner, M.B. (Lond.), Pro- 

 fessor of Anatomy, University of Edinburgh 409 



On the Movement of the Glass Case of a Radiometer. By William 

 Crookes, F.R.S. &c 409 



List of Presents 410 



Preliminary Note on the Anatomy of the Umbilical Cord. By Lawson 

 Tait, F.R.C.S. &c. (Plates 11-14.) 417 



No. 169.— April 6, 1876. 



Experiments on the Friction between Water and Air. By Dr. Ritter von 

 Lang , . 441 



An Inquiry into the Cause of the slow Pulse in Jaundice. By J. Wickham 

 Legg, M.D., Demonstrator of Morbid Anatomy in St. Bartholomew's 

 Hospital 442 



On the Structure of a Species of Millepora occurring at Tahiti, Society 

 Islands. By H. N. Moseley, M.A., Naturalist to the ' Challenger ' Ex- 

 pedition 448 



Supplemental Note to a Paper on the Structure, Physiology, and Develop- 

 ment of Antedon (Comattda, Lamk.) rosaceus. By William B. Carpenter, 

 M.D., F.R.S 451 



April 27, 1876. 



The Bakerian Lecture. — On the Gaseous State of Matter. By Prof. T. 

 Andrews, LL.D., F.R.S., Vice-President of Queen's College, Belfast 455 



List of Presents 459 



No. 170. 



Preliminary Report to the Hydrographer of the Admiralty on some of the 

 Results of the Cruise of H.M.S. * Challenger ' between Hawaii and Val- 

 paraiso. By Prof. Wyville Thomson, F.R.S., Director of the Civilian 

 Scientific Staff on Board. (Plates 15-19.) 463 



Preliminary Reports to Professor Wyville Thomson, F.R.S., Director of 

 the Civilian Scientific Staff, on Work done on board the ' Challenger.' 

 By John Murray, Esq., Naturalist to the Expedition. (Plates 20-24.) . . 471 



